David L. Dayton M. J. Fletcher Charles W. Moulton Joseph J. Pollock Antonio Zamora Comparison of the Retrieval Effectiveness of CA Condensates (CACon) and CA Subject Index Alert (CASIA). 20-28 1977 17 Journal of Chemical Information and Computer Sciences 1 http://pubs.acs.org/cgi-bin/archive.cgi/jcisd8/1977/17/i01/f-pdf/f_ci60009a006.pdf db/journals/jcisd/jcisd17.html#DaytonFMPZ77